What is the official ID of this bill?

The official print number for this legislation is HR 1477.

When did the legislative process begin?

The process officially started on 2021-03-02.

Where can I read the full text of this legislation?

The full official text is available at: https://www.congress.gov/117/bills/hr1477/BILLS-117hr1477ih.htm

Is this summary verified?

Yes. This content was analyzed by AI and verified by the Lustra Judge System on 2026-01-02.

Who is the primary sponsor?

The primary sponsor is Rep. Dean, Madeleine [D-PA-4].

Which chamber initiated this legislation?

This legislation was initiated in the House of Representatives.

What is the latest detailed status?

The latest detailed status is: Referred to the Subcommittee on Crime, Terrorism, and Homeland Security.

Analysis and Potential Impact of HR 1477

We don't know, that is up to you to decide. Summarizing raw data with AI is fundamentally different from predicting socio-economic outcomes. As of 2026, we believe impact assessment strictly requires a human in the loop to verify and judge. Review our public AI processing logs for full transparency, and use Lustra to track active legislation for instant status push notifications.

Stricter rules for undetectable firearms: Modernizing detection requirements.

Q: What are the main provisions?

Key points include: Detectability Requirement: Firearms must contain material producing a magnetic field equivalent to at least 3.7 ounces of 17–4 PH stainless steel. New Definition of 'Major Component': Includes the slide, cylinder, frame, or receiver, and for rifles/shotguns, the barrel. Scope Expansion: The prohibition now explicitly includes firearm prototypes. Exemptions: The rules do not apply to firearms possessed by or under the control of the U.S. government, or manufacturing/importation under existing government contracts.

This Act modernizes the Undetectable Firearms Act of 1988 regarding firearms that are difficult to detect by security scanners, such as those used in airports. It redefines 'detectable material' and 'major component' and explicitly includes firearm prototypes. The legislation mandates that firearms must contain sufficient magnetic material to be detected by standard screening devices.

Key points

Detectability Requirement: Firearms must contain material producing a magnetic field equivalent to at least 3.7 ounces of 17–4 PH stainless steel.

New Definition of 'Major Component': Includes the slide, cylinder, frame, or receiver, and for rifles/shotguns, the barrel.

Scope Expansion: The prohibition now explicitly includes firearm prototypes.

Exemptions: The rules do not apply to firearms possessed by or under the control of the U.S. government, or manufacturing/importation under existing government contracts.

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Status:

Expired

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Additional Information

Undetectable Firearms Modernization Act

Print number: HR 1477

Sponsor: Rep. Dean, Madeleine [D-PA-4]

Process start date: 2021-03-02

System Note: Lustra is free, publicly auditable civic infrastructure, with full source code available on GitHub. You are reading sterilized legislative data, processed by our radical neutrality engine to strip political spin and retain factual mechanics. We process only official government data. Original documents remain the authoritative source, always verify them if you can.

Summarized by: gemini-3-pro-preview

Source data: api.congress.gov

AI work logs for this document launch

Stricter rules for undetectable firearms: Modernizing detection requirements.

Key Questions about Stricter rules for undetectable firearms: Modernizing detection requirements.